I dont use Garage Band so cant comment, IWeb is the same as 09. Imovie does look better but iphoto is pants!
When you email pics from iphoto, you HAVE to use one of the templates, some of which look sqaure so chop pics up. You cannot send as a standard pic. If you try to do that through email-photo browser, you can send small (50k), medium (120k) large (225k) or full size (8mb typically). In the old iphoto you could select large which would be around 1mb.
The look of it is not as nice, although thats a small point. The other thing is that the viewing in full screen was easier and better last time. Check out the Apple support forums on the apple site for ilife and you will see lots of unhappy people.